Mo 141 N over Mo 370
PoorSt. Louis County, Missouri · S 2038 T 47 N R 5 E · Structure no. 3997
- Built
- 1991
- 34 years old
- Condition
- Poor
- inspected August 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 299 ft
- 2 main spans
- Daily traffic
- 13,925
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
Mo 141 N over Mo 370 is a steel continuous stringer/multi-beam or girder carrying Mo 141 N over Mo 370 in St. Louis County, Missouri. It was built in 1991, so it is 34 years old, younger than the Missouri average of 45.1 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 13,925 vehicles a day, roughly 21% of them trucks, projected to reach 17,406 by 2044. The structure is 299 ft (91.1 m) long and 94 ft wide. If it were closed, the detour would be 9.9 mi (16 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Mo 141 N over Mo 370 built?
It was built in 1991, making it 34 years old in 2025.
What condition is Mo 141 N over Mo 370 in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in August 2024.
How much traffic does Mo 141 N over Mo 370 carry?
About 13,925 vehicles per day (2024 count), of which roughly 21% are trucks.
How long is Mo 141 N over Mo 370?
The structure is 299 ft (91.1 m) long with a longest span of 120 ft (36.7 m) and a deck 94 ft wide.
Who owns Mo 141 N over Mo 370?
It is owned by the State Highway Agency.